U. S. Army Medical Museum Compound Monocular Microscope

Museum curators suspect that this microscope was produced by the U. S. Army Medical Museum for an exhibit at the International Exposition in Philadelphia in 1876. The original model, from which our 3-D Studio Max drawing is derived, resides in the Billings Microscope Collection at the National Museum of Health and Medicine at Walter Reed Army Hospital in Washington, D. C.

The flat horseshoe base has openings for four screws used to bolt the microscope to a table or workbench. Attached to the base is a short Lister-style limb having a single milled-head pinion and a rack mechanism. The body tube has a cone-shaped nose and a single ocular. Focus is achieved by moving the body tube up and down with the rack and pinion mechanism.